package jdbc;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
import java.sql.Statement;

/**
 * 向表中插入数据(执行DML语句)
 */
public class JDBCDemo2 {
    public static void main(String[] args) throws Exception {
        //向userinfo表中插入一条记录
        Class.forName("com.mysql.cj.jdbc.Driver");
        Connection conn = DriverManager.getConnection(
                //jdbc:mysql://数据库地址:端口/数据库名?一堆固定参数
                "jdbc:mysql://localhost:3306/tedu?characterEncoding=utf8&useSSL=false&serverTimezone=Asia/Shanghai&rewriteBatchedStatements=true",
                "root",
                "root"
        );
        Statement statement = conn.createStatement();
        /*
            INSERT INTO userinfo(username,password,nickname,age)
            VALUES('张三','123456','阿三',22)
         */
        String sql = "INSERT INTO userinfo(username,password,nickname,age) " +
                "VALUES('张三','123456','阿三',22)";
        /*
            int executeUpdate(String sql)
            执行DML语句使用的方法，返回值表示执行后影响了表中的记录数
         */
        int num = statement.executeUpdate(sql);
        if (num > 0) {
            System.out.println("插入成功");
        }

        conn.close();
    }
}









